I am very stressed

I get very stressful over the mistakes that I have done. Today, I was accused of cheating on a test. Even though I was the person stopping my friend from doing so, since it was stupid and he would easily get caught. Later, while playing football, a kidr told me I couldn’t play. Since, most of my classmates think that I’m quite and not that outgoing at all. I feel like there’s a lot of pressure on me at this young age. I just want to enjoy high school stress free.